Robust H∞H∞ control for uncertain T–S fuzzy time-delay systems with sampled-data input and nonlinear perturbations

The H∞H∞ control for Takagi–Sugeno (T–S) fuzzy time-delay systems with sampled-data input and nonlinear perturbations is considered in this paper. In order to treat the sampled-data input problem, the time-varying delay transformation technique is provided to find the upper bound of sampled time. LMI optimization approach is applied to solve the H∞H∞ control problem and find the minimization of disturbance attenuation.